Grinding table



a6/WM? *I u V Feb, 17, 1925 1,527,092A

H. A. STEWART- v GRINDING TABLE vFiled Dec. 26. 1923 2 sheets-sheet 1 INVENTOR WITNESS: ATTORNEY Feb. 17, 1925. 1,527,092 H. A. STEWART GRINDING TABLE Filed Dec. 26, 1923 2 .Sheets-Sheet 2 ngz /f/i www Y INVENTOR WITNESS:

ArroRNEY Patented Feb. 17,. 1925,

UNITED s'rATrEs- PATENT 'OFFICE'.

.HENRY A. STEWART,- F HIGHLAND PARK, MICHIGAN.

Gamme renna.

' Application med I Jecember- 26, 1923. Serial No. 662,805.

To all whom 4it may concern.'

Be it known that I, HENRY A. STEWART, a'citizen of the United States, residing at Highland Park. in the county of Waynev Another object'of the invention is tosc.

`form the parts that the balls can be fed to the grindingapparatus. in a 'continuous stream and without stopping the machine to reload it.

This invention also consists in certain other features of construction and in the I combination and Aarrangement ofthe several parts, to be hereinafter fully described,.

illustrated in the accompanying drawings and specifically pointed out in the appended claims.

erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view ofthe apparatus. Figure 2 is a sectional view thereof. Figure 3 is a top planview of the table.

' Figlu'e 4 isa plan view of the guiding mem kr Figure 5 is a plan view of the entire device.

Figures 6 and 7 are views of amodificamtion.

In these views, 1 indicates a base inwhich the table 2 is located and is held therein by the bolts 3. A disc-shaped guiding member 4 is held on the base 1 by the bolts 5 and.

this member covers the table. The grinding wheel is shown at 6. The guiding member is provided with a spiral-shaped slot'7 which has its mouth 8 at the outer edge of the member' and the balls to be ground are fed In describing my invention in detail, ref-l into said mouth by the tubet). The inner end of the slot is arrangedto feed the balls to the outlet opening 1 0 formed in the table adjacent the center thereof. The table has its upper surface tapered, as shown at 11, this taper being so formed that it will gradually force the balls against the wheel 6 as the balls pass around the slot 7 towards the outlet opening 10 andare caused to ride up the surface by said'slot. The rotary movement of the grinding wheel forces the balls .through the slots 7A to said opening. The tapered part of the table` gradually forces the balls against the wheelrso that they will be ground to the proper size by the time they Vreach the outlet opening. The

taper of the table must be such asY to give the balls the proper diameter by thetime they reach the outlet opening.

Instead of using the guiding member the table can be provided withV a shown in Figures 6 and 7 which takes the place of theguiding member.

It is thought frolnthe foregoing descripoove 12, as

tion that the advantages and ,novel features of my invention will be readily appaigt.

I desire it to be understood that I may make changes in the construction and Yin the combination and varrangement of the several parts, provided that such changes fall with- .in'tlie scope ofthe appended claims.

What I claim is 1. A ball grinding 'machine comprising a table, a'grindin'g wheel locatedA above .the

same and means for guiding balls in a cir cuitous path around the table and under-the wheel', said table being tapered to graduall force the balls against the grindingv whee 2.- A grinding machine comprising a table having au inlet adjacent its outer edge and au outlet adjacent its center, a-v grlnding wheel located above the table, guiding means for causing the balls to pass a circuitous path on the table from the inlet tothe outlet while they arebeing acted upon by. the grinding wheel and Asaid table being tapered to gradually forcetheballs the grinding wheel.

3.l A grinding machine comprising atable having a'n inletl adjacent its' outer e and an outlet adjacent its center, a grinding wheel located above the table, guiding meansn u grinding Wheel, said table being tapered to for causing the balls to pass in a oircuitous and grinding means and having a spiralpath on the table from the inlet to the outshaped slot therein through which the balls let while they are being acted upon by the pass. 10

In testimony whereof I afix my signagradually force the balls against the grindture.

ing Wheel, such guiding means consisting of a disclike member placedl between the table HENRY A. STEWART. 

